<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单区域 -->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username">
                     <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
                 </el-form-item>
                 <!-- 密码 -->
                 <el-form-item prop="password">
                     <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
                 </el-form-item>
                 <!--按钮区域-->
                 <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                 </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
    data(){
        return{
            //这是登录表单的数据绑定对象
            loginForm:{
                username:'admin',
                password:'123456'
            },
            //这是表单的验证规则对象
            loginFormRules:{
                //验证用户名是否合法
                username:[
                      { required: true, message: '请输入登录名称', trigger: 'blur' },
                      {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
                ],
                //验证密码是否合法
                password:[
                     { required: true, message: '请输入登录密码', trigger: 'blur' },
                     {min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur'}
                ]
            }
        }
    },
    methods: {
        //点击重置按钮，重置登录表单
     resetLoginForm(){
        //  console.log(this);
        this.$refs.loginFormRef.resetFields();
     },
     login(){
         this.$refs.loginFormRef.validate(async valid=>{
             if (!valid)return;
            const {data: res}= await this.$http.post("login",this.loginForm);
            if(res.meta.status !== 200) return this.$message.error('登录失败！');
             this.$message.success('登录成功！');
             //1.将登录成功后的token保存到客户端的sessionStorage
             //1.1
             //1.2
             console.log(res);
             window.sessionStorage.setItem('token',res.data.token);
             //
             this.$router.push('/home');
         }); 
     }   
    }
};
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}

.login_box{
    width:450px;
    height: 300px;
    background-color:#fff ;
    border-radius:3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);

    .avatar_box{
        height: 130px;
        width: 130px;
        border:1px solid #eee;
        border-radius: 50%;
        padding:10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left:50%;
        transform: translate(-50%,-50%);
        background-color: #fff;
        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color:#eee ;
        }
    }
}

.login_form{
    position: absolute;
    bottom:0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

.btns{
    display: flex;
    justify-content: flex-end;
}
</style>